Clock



FIG. 1 is a perspective view of a clock showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a left side elevational view thereof, the right side view being a mirror image thereto.

The bottom of the clock is flat and unornamented. 

The ornamental design for a clock, as shown and described. 